Modelocked Thermal Frequency Combs for Ultrashort Chaotic Quantum Optics

Kentaro Wakui, Yoshiaki Tsujimoto, Tadashi Kishimoto, Mikio Fujiwara, Masahide Sasaki, Aruto Hosaka, Fumihiko Kannari, Masahiro Takeoka

研究成果: Article査読


Modelocked thermal frequency combs (MTCs) are generated by employing spectrally narrowed amplified spontaneous emission (ASE) seeded into an electro-optic frequency comb generator. The MTC emits 2-ps duration ultrashort pulses at a repetition rate of 10 GHz. Autocorrelation of the MTC pulses confirms a reduced coherence time, (Formula presented.) ps, aligning with the narrowed bandwidth of the ASE seed. Intensity correlations of optically gated MTC pulses at a repetition rate of 250 MHz reveal nearly ideal thermal photon statistics with an experimental (Formula presented.), yielding an intrinsic (Formula presented.) after background noise removal. As a practical application, second harmonic generation (SHG) is performed utilizing the optically gated MTC pulses as a pump and experimental intensity correlations, (Formula presented.), are examined for the SH photons. An entire transition in (Formula presented.), continuously changing from six to two by increasing the pump strength, agrees with the single-mode analytical model. Furthermore, time-resolved pulse height correlations allow to simultaneously acquire power variations in SHG and third harmonic generation against the pump. With the maximum peak intensity, (Formula presented.), realized in a periodically poled (Formula presented.) waveguide for SHG, the demonstration highlights the potential for various applications in chaotic quantum optics experiments that necessitate ultrashort, high-intensity, single-spatiotemporal-mode thermal pulses.

ジャーナルAdvanced Quantum Technologies
出版ステータスAccepted/In press - 2024

ASJC Scopus subject areas

  • 統計物理学および非線形物理学
  • 電子材料、光学材料、および磁性材料
  • 核物理学および高エネルギー物理学
  • 数理物理学
  • 凝縮系物理学
  • 計算理論と計算数学
  • 電子工学および電気工学


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